In the MCU console,go to wheel icon, go to System settings| General
Under Host System Users paste account names in the "Account by name to mark" field
Then click OK
The following message appears: Can not save settings. Verify that server is running and try again. Failed to save settings.
STATUS: Enhancement Request 796833 been submitted to increase character length the field allows.
WORKAROUND: Use UID range in the field instead of account names.